With autoupdate=false I could stop the bouncing at least for the HomeKit item.
In Homematic GUI it is still bouncing, but I don’t care about it.
The OH Sitemap is with a Proxy Item, as I also have to invert the values. HomeKit and Homematic does use 100 if the Sunbind is fully open. in OH the value is 0 however. With the ProxyItem I invert the value, in order to show the correct value in the OH Sitemap as well. Not sure this is the correct approach.
